Is a large Rottweiler good for a woman too?

My uncle's male Rottweiler is 4 years old by now. The dog has already been socialized with all of us and others, including small kids too.

The thing is with me and my sister, it gets too happy when we approach the park. It's heavy, gets in front of us and nearly drags us. I'm just a 5'4 woman (120 Ibs) and my sister is smaller, 5'2.

I know he's very friendly, very playful and too sweet but I'm worried about this:
What if something scares him (animals get scared too afterall), it drags us and we can't control it. Next thing is either my uncle or one of us is going to get fined or get in trouble. Overally is a large Rottweiler good for a woman too?
Is a large Rottweiler good for a woman too?
Post Opinion